Home / 9,917.88-13,685.79-5,668.09

Finding the Fourth Proportional to 9,917.88, 13,685.79 and 5,668.09

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Solution

The fourth proportional to 9,917.88, 13,685.79 and 5,668.09 is: 7,821.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,917.88 : 13,685.79 = 5,668.09 : x
  2. Step 2: Convert to fraction form
    9,917.88/13,685.79 = 5,668.09/x
  3. Step 3: Cross multiply
    9,917.88x = 13,685.79 × 5,668.09
  4. Step 4: Simplify right side
    9,917.88x = 77,572,289.44
  5. Step 5: Solve for x
    x = 77,572,289.44/9,917.88
  6. Step 6: Final answer
    x = 7,821.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.